Error map

vue/multi-word-component-names ESLint: error Component name "Home" should always be multi-word vue/multi-word-component-names

Vue · layer 1, On your device

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1 · On your device 4 · Application & API 7 · Build & delivery
vue/multi-word-component-names — ESLint: error Component name "Home" should always be multi-word vue/multi-word-component-names (Vue)vue/multi-w…Failed to resolve component — Vue: [Vue warn]: Failed to resolve component: x (Vue)Failed to resolve c…react-hooks/exhaustive-deps — React Hook useEffect has a missing dependency (react-hooks/exhaustive-deps) (React)react-hooks/exhaust…Failed to compile: ESLint errors during next build — Next.js: Failed to compile. ./src/app/page.tsx 12:7 Error: 'x' is assigned a value but never used. @typescript-eslint/no-unused-vars (Next.js)Failed to compile: …Duplicate attribute (Vue template) — Vue: [plugin:vite:vue] Duplicate attribute. / [vue/no-duplicate-attributes] Duplicate attribute 'class' (Vue)Duplicate attribute…Vite: Failed to parse source / Unknown file extension ".vue" — Vite/Vue: [plugin:vite:import-analysis] Failed to parse source for import analysis — you may need to install appropriate plugins to handle the .vue file format (Vue)Vite: Failed to par…vue-loader was used without the corresponding plugin — Webpack: Error: [vue-loader] vue-loader was used without the corresponding plugin. Make sure to include VueLoaderPlugin in your webpack config. (Vue)vue-loader was used…ESLint Parsing error in .vue files — ESLint: Parsing error: Unexpected token < / Parsing error: '>' expected (vue-eslint-parser not configured) (Vue)ESLint Parsing erro…[Vue warn]: The computed property "x" is already defined in data/props — Vue: [Vue warn]: The computed property "name" is already defined in data. (Vue)[Vue warn]: The com…refs on function components — Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()? (React)refs on function co…Avoid mutating a prop directly — Vue: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders (Vue)Avoid mutating a pr…Property was accessed during render but is not defined — Vue: [Vue warn]: Property "x" was accessed during render but is not defined on instance (Vue)Property was access…Too many re-renders — Error: Too many re-renders. React limits the number of renders to prevent an infinite loop. (React)Too many re-rendersInvalid hook call — Error: Invalid hook call. Hooks can only be called inside of the body of a function component. (React)Invalid hook callasync useEffect — Warning: useEffect must not return anything besides a function, which is used for clean-up. It looks like you wrote useEffect(async () => ...) (React)async useEffectELIFECYCLE — npm ERR! code ELIFECYCLE / Command failed with exit code 1 (npm)ELIFECYCLEgyp ERR! — gyp ERR! build error / node-gyp rebuild failed (npm)gyp ERR!ERR_OSSL_EVP_UNSUPPORTED — Error: error:0308010C:digital envelope routines::unsupported (Node.js)ERR_OSSL_EVP_UNSUPP…Failed to fetch dynamically imported module / async component failed — Vue: TypeError: Failed to fetch dynamically imported module: https://app.example.com/assets/Settings-abc123.js (Vue)Failed to fetch dyn…v-if with v-for on the same element — Vue: [vue/no-use-v-if-with-v-for] / Vue 3: v-if has higher priority than v-for — property accessed during render is undefined (Vue)v-if with v-for on …v-else/v-else-if has no adjacent v-if — Vue: [plugin:vite:vue] v-else/v-else-if has no adjacent v-if or v-else-if. (Vue)v-else/v-else-if ha…Vite failed to resolve import — [vite] Internal server error: Failed to resolve import "x" from "src/App.jsx". Does the file exist? (React)Vite failed to reso…Could not Fast Refresh — [vite] hmr invalidate … Could not Fast Refresh. Export is incompatible. (React)Could not Fast Refr…[Vue warn]: Extraneous non-props attributes — Vue: [Vue warn]: Extraneous non-props attributes (class) were passed to component but could not be automatically inherited because component renders fragment or text root nodes (Vue)[Vue warn]: Extrane…ERESOLVE — npm ERR! code ERESOLVE — unable to resolve dependency tree (npm)ERESOLVE[Vue warn]: Duplicate keys found during update — Vue: [Vue warn]: Duplicate keys found during update: "5", possible duplicate or missing keys (Vue)[Vue warn]: Duplica…[Vue warn]: Hydration node/text/children mismatch — Vue: [Vue warn]: Hydration text content mismatch / Hydration node mismatch: server rendered element contains more child nodes than client vdom (Vue)[Vue warn]: Hydrati…TS1005: ';' expected / ',' expected (syntax error) — TypeScript: error TS1005: ';' expected. (TypeScript)TS1005: ';' expecte…[Vue warn]: Component emitted event but it is neither declared in the emits option nor as an onXxx prop — Vue: [Vue warn]: Component emitted event "update" but it is neither declared in the emits option nor as an "onUpdate" prop (Vue)[Vue warn]: Compone…[Vue warn]: Unhandled error during execution of setup/mounted hook — Vue: [Vue warn]: Unhandled error during execution of mounted hook / TypeError: Cannot read properties of undefined (reading 'x') (Vue)[Vue warn]: Unhandl…[Vue warn]: Invalid prop: type check failed — Vue: [Vue warn]: Invalid prop: type check failed for prop "count". Expected Number with value 5, got String with value "5" (Vue)[Vue warn]: Invalid…

Directly related (8)

Failed to resolve componentVue

Vue: [Vue warn]: Failed to resolve component: x

The template uses a component tag that isn’t registered or imported where it’s used.

react-hooks/exhaustive-depsReact

React Hook useEffect has a missing dependency (react-hooks/exhaustive-deps)

ESLint warns that the effect reads a value that isn’t in its dependency array, so it may use a stale value.

Failed to compile: ESLint errors during next buildNext.js

Next.js: Failed to compile. ./src/app/page.tsx 12:7 Error: 'x' is assigned a value but never used. @typescript-eslint/no-unused-vars

`next build` runs ESLint and fails the build on lint errors.

Duplicate attribute (Vue template)Vue

Vue: [plugin:vite:vue] Duplicate attribute. / [vue/no-duplicate-attributes] Duplicate attribute 'class'

The same attribute appears twice on an element in a template.

Vite: Failed to parse source / Unknown file extension ".vue"Vue

Vite/Vue: [plugin:vite:import-analysis] Failed to parse source for import analysis — you may need to install appropriate plugins to handle the .vue file format

Vite can't process `.vue` files because the Vue plugin isn't installed/enabled.

vue-loader was used without the corresponding pluginVue

Webpack: Error: [vue-loader] vue-loader was used without the corresponding plugin. Make sure to include VueLoaderPlugin in your webpack config.

Webpack config uses `vue-loader` but doesn't add its plugin.

ESLint Parsing error in .vue filesVue

ESLint: Parsing error: Unexpected token < / Parsing error: '>' expected (vue-eslint-parser not configured)

ESLint can't parse `.vue` files because the Vue parser isn't configured.

[Vue warn]: The computed property "x" is already defined in data/propsVue

Vue: [Vue warn]: The computed property "name" is already defined in data.

A name is used twice among props/data/computed/methods in the Options API.

Two steps away (22)

refs on function componentsReact

Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?

A ref was passed to a function component that doesn’t forward it.

Avoid mutating a prop directlyVue

Vue: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders

A child component assigned to a prop. Props flow one way — the parent owns the value.

Property was accessed during render but is not definedVue

Vue: [Vue warn]: Property "x" was accessed during render but is not defined on instance

The template references a variable/function that the component doesn’t expose.

Too many re-rendersReact

Error: Too many re-renders. React limits the number of renders to prevent an infinite loop.

A state update runs during render, which triggers another render, which updates state again — forever.

Invalid hook callReact

Error: Invalid hook call. Hooks can only be called inside of the body of a function component.

A hook ran outside a function component/custom hook, conditionally — or two copies of React are loaded.

async useEffectReact

Warning: useEffect must not return anything besides a function, which is used for clean-up. It looks like you wrote useEffect(async () => ...)

An async function was passed directly to useEffect, so it returns a Promise instead of a cleanup function.

ELIFECYCLEnpm

npm ERR! code ELIFECYCLE / Command failed with exit code 1

An npm script (build, start, test, postinstall) exited with an error. ELIFECYCLE is only the wrapper — the real error is printed…

gyp ERR!npm

gyp ERR! build error / node-gyp rebuild failed

A dependency with native C/C++ code couldn’t compile — missing build tools, Python, or an unsupported Node version.

ERR_OSSL_EVP_UNSUPPORTEDNode.js

Error: error:0308010C:digital envelope routines::unsupported

An old build tool (webpack 4, old react-scripts) uses a hash algorithm that OpenSSL 3 in Node 17+ disables.

Failed to fetch dynamically imported module / async component failedVue

Vue: TypeError: Failed to fetch dynamically imported module: https://app.example.com/assets/Settings-abc123.js

A lazy-loaded route/component chunk couldn't be loaded (new deployment removed old chunks, network issue, or wrong base path).

v-if with v-for on the same elementVue

Vue: [vue/no-use-v-if-with-v-for] / Vue 3: v-if has higher priority than v-for — property accessed during render is undefined

Using `v-if` and `v-for` on one element: in Vue 3, `v-if` runs first and can't see the loop variable.

v-else/v-else-if has no adjacent v-ifVue

Vue: [plugin:vite:vue] v-else/v-else-if has no adjacent v-if or v-else-if.

A `v-else` element isn't directly after a `v-if`/`v-else-if` sibling.

Vite failed to resolve importReact

[vite] Internal server error: Failed to resolve import "x" from "src/App.jsx". Does the file exist?

Vite couldn’t find an imported file or package.

Could not Fast RefreshReact

[vite] hmr invalidate … Could not Fast Refresh. Export is incompatible.

Fast Refresh fell back to a full reload because the file exports non-components alongside components.

[Vue warn]: Extraneous non-props attributesVue

Vue: [Vue warn]: Extraneous non-props attributes (class) were passed to component but could not be automatically inherited because component renders fragment or text root nodes

Attributes (class, style, listeners) passed to a component can't be applied because the component has multiple root nodes.

ERESOLVEnpm

npm ERR! code ERESOLVE — unable to resolve dependency tree

npm 7+ found conflicting peer dependency requirements and refuses to install a broken tree.

[Vue warn]: Duplicate keys found during updateVue

Vue: [Vue warn]: Duplicate keys found during update: "5", possible duplicate or missing keys

Items in a `v-for` list share the same `:key`, which breaks Vue's diffing.

[Vue warn]: Hydration node/text/children mismatchVue

Vue: [Vue warn]: Hydration text content mismatch / Hydration node mismatch: server rendered element contains more child nodes than client vdom

Server-rendered HTML differs from what the client renders on first load.

TS1005: ';' expected / ',' expected (syntax error)TypeScript

TypeScript: error TS1005: ';' expected.

The parser hit a syntax error — missing punctuation, mismatched brackets, or an unsupported syntax for your TypeScript version.

[Vue warn]: Component emitted event but it is neither declared in the emits option nor as an onXxx propVue

Vue: [Vue warn]: Component emitted event "update" but it is neither declared in the emits option nor as an "onUpdate" prop

A component calls `emit("update")` without declaring it in `emits`.

[Vue warn]: Unhandled error during execution of setup/mounted hookVue

Vue: [Vue warn]: Unhandled error during execution of mounted hook / TypeError: Cannot read properties of undefined (reading 'x')

An exception was thrown inside a lifecycle hook, watcher, event handler or render, and Vue logs it with the context.

[Vue warn]: Invalid prop: type check failedVue

Vue: [Vue warn]: Invalid prop: type check failed for prop "count". Expected Number with value 5, got String with value "5"

A prop received a value of the wrong type.

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